Engine



Nov. 15, 1927.

1,649,775" F. F. CAMERON f ENGINE Filed Aug-1,14, 1924 s Sheets-Sheet 1 fiG- Eluucul'or 7.7% zk avifiwk Nov. 15, 1927.

1,649,775 F. F. CAMERON ENGINE Filed Auz. 14, 1924 3 Sheets-Sheet 2 Nov, 15-, 19 27.

v 1,649,775 F.) F. CAMERON ENGI NE Filed Aug 14 1924 3 Sheets-Sheet 3 Ll: E 6; FITQLEF w ll Patented Nov. 15, 1927.

UNITE n- ."EORREST F. CAMERON-,1 0F CLEVELAND,

OHI O, ASSIGNOR TO EDGAR B. DAVIS, O13" BROGKTON, MASSACHUSETTS;

ENGINE.

Application fil'edtAugust 14, 1924. Serial No. 732,027.

This invention relates to internal combustion. engines, and. more particularly to an aircooled engine suitable foruse-in automotive vehicles and-=the like An object of the-invention is to provide arr engine construct-ion in which the assembly and disassembly iscomparatively simple. i

Another object ofthe: inventionuis to reduce" the number of parts in such 4 an engine and to make the cylinders removable with a 1 minimum amount of work. v

A further object of" the invention is to improve the means for reducing 1 the. amount of oil thrownintothe engine cylinders by the crank shaft;

A still further object: of: the invention is to; reduce as} much as is consistent with rigidity andrsafety thenumbor OfSQCLIl'iHgHIGRHS used in holding: the, engine assembled! and to produce an: engine of the character described which is-simple iii-construction, efficient in operation and: easy to assemble or disassemble.

These and: other objects will be apparent from the following descriptiomancl annexed drawings, in which: I

Figure I a plan view of'ai form of my invention \VhlCl'llI now consider preferable.

Fig. 2:is an elevation partly in section of this construction;

Fig.v 3 is a transverse sectional elevation subst-antially along the plane indicated by the line" 33,, Figure 1..

Figs; 4:, 5 and 6- show, respectively, in outline a manifold, cylinders and crank case, partly in section, just as removed from the oil pan.

Fig. '1 is a: longitudinal section in outline through: the oilpan. i

Referringmore in detail; to these drawings, numeral 1 designates the oil pan having at one end an enlarged prtion 2 in which is locatedthefly wheel 3. i

The oil pan 1! underlies the crank case l, which latter is removably secured thereto by bolts 4" which pass through the apertures in the peripheral flange on the crank case and engage threaded openings in the correspondin-g, peripheral flange of" the oil pan 1 on which the crankcase rests. Suitable supports 5, 6 and 7 in the crank case 4: carry the crank shaft 8-. On this crank shaft are mounted the connecting :rods 9, carrying the The 2 dcrs 15 form skirts '14 which extendthrough the face 4 and a; substantial, distance into the interior of the crankcase.- Theseends of the cylinders are substantially smooth and ofa uniform diameter of sufficient, size so that these ends closely lit, in the openings 13 with a frictional fit. It will thus be seen that when the cylinders are inserted into.

the openings they will be sufficiently filled sothat there will be no rattling of the parts and yet-1' the cylinder-scan be easily with drawn from these openings when it is desired to disassemble the engine.

Theends 14, which project into the crank case, serve as-baffles to reduce the amount of oil which is splashedintothe cylinders by reason ofthe rotation of the crankshaft and the projecting oil engaging 5119,6178 17 carried thereby. This wall, also serves as a pilot to guide the piston 10 initsreciprocating-move ment at the lower extremity of its course, thus making it possible to shorten the length of the cylinder above the top of the crank case. 7

The cylinders 15 are formed with any suitable heat radiating ribs 18 on the sidesand ribs 1 9 on the upper portions so that heat will be dissipated,as is'well' understood;

At the upper extremity of the cylinders, and preferably cast integral thcrewith,are formed inlet and outlet gas passagesQO, '21, respectively, which are adapted to receive nipples 22 at their upper portions; Intake manifold 23 and exhaust manifold 24 are formed to rest on'the cylinder and engage the apertures therein, the nipples22 being adapted to form a tight joint between the memfolds and the cylinder ports. Betweencach pair of cylinders each manifold is formed with a web, portion 25 provided with an aperture, 26). Suitable rods 27 threaded at in any suitable manner.

each end are adapted to engage threaded apertures formed in bosses in the crank case 4; and to have their upper ends pass through the apertures 26 in the webs 25 of the inanifolds to receive nuts 28. hen the nuts 28 are tightened it is obvious that the manifolds will be tightly secured in place on the cylinders and the cylinders will be tightly clamped andheld in place in the top of the crank case. r

Mounted in the crank case t are the cam shafts 30, 31 which engage the lower ends of the rods 32, 33, respectively, which operate'the poppet valves 34, 35, as is well understood in the art. The rods 32, 33 are supported by pins journaled in extensions, carried bythe sleeves 36, 87 which are secured to the crank case in any suitable manner, as by bolting. The rods are provided with enlarged or ball portions which'snbstantially fill the sleeves 36, 37 and thus close them to prevent oil from escaping out of the engine. i

The engine may be lubricated in any desired manner. For example, -I have shown secured tothe oil pan 1 an inner oil pan 40 which is providedwith one or more apertures 41 therein to permit oil from the oil pan 1 to flow into the inner oil pan 10 where it is engaged by the projecting fingers 17 and splashed onto the cylinder walls and cam shaft mechanisnn It will be understood, however, that, if preferred. a force feed lubricating system can be utilizedin connection with my invention as well as the splash system indicated herein.

While it has not been indicated in the drawing, itis ofcourse to be understood that,

if it is deemed sufiiciently desirable in my engine to gain access to the cam shaft and connecting rod without disassembling the engine, a detachable bottom can be provided for the oil pan 1 and can be secured thereto It will be obvious from the foregoing that, if itis desired to remove one or more of the cylinders 15, it is only necessary to remove the four fastening means and the manifolds 23 andthen lift the appropriate cylinder from its place. If one desires to go further than thisand remove thecrank case, together with the crank shaft and pistons, it is only" necessary, after having removed the cylinders 15, to take out the bolts 1" and 11, andthe crank case and assembled parts can thenbe lifted off. If itis desired to work upon the crank shaft or connecting rods or any otherparts within the crank case, these willbe entirely exposed when the top has been removed. It is desired to point out particularly the simplicity of this construc tion and the ease with which the whole assembly may be put together or disassembled.

It is, of course, understood that the specific description of the structure set forth above may be departed from without departing from the spirit of my invention, as setforth in this specification and the appended claims.

What I claim is:

1. In an engine, the combination ofan oil tightly against the cylinders whereby said cylinders are clamped in place solelythrough said manifold securing means.

2. In an automob le engine, an 011 pa having engine supporting portions constitutmg the sole support for said engine, a crank case cooperating therewith and havingopenings therein, securing means removably fastenlng the latter to the former, a crank shaft mounted in the crank case, engine cylinders fitting closely in the openings in said cover,

said cylinders being provided with inlet and outlet ports, manifolds communicating with said ports, and securing means fastening the manifolds detachably to the crank case and holding them tightly against the cylinders,

so that, upon removal of the crank case securing means and the manifold securing means, the manifolds, cylinders and crank case cover may be removed from the oil pan.

3. In an automobile engine, an oil. pan

having engine supports by means of which the engine is mounted on the vehicle, a fly wheel located adjacent one end thereof, a crankcase cooperating with the oil pan and having openings therein, a crank shaft car ried by said crank case, pistons and connect- 1ng rods operated by said crank shaft, cylinders fitting said openings in the crank case,

manifolds comlnunicating with the cylinders, removable means connecting the crank shaft to the fly wheel, removable means connecting the crank case to the oil pan, and removable means holding the manifolds against the cylinders and holding the cylinders against the crank case, so that, upon removal of all said removable means, the manifolds, cylinders and crank case may all be bodily removed from the engine supportingmeans.

l. In an engine, a fixed oil pan for supporting the crank case and having outturned, peripheral flanges, a crank case having cooperating flanges to engage said oil pan, and means for removably securing said crank case to said oil pan, cylinders, pistons, connecting rods and a crank shaft carried by said crank case, a fly wheel located adjacent one end of the oil pan, said crank shaft being removably connected to said fly wheel, whereby upon removal of the means securing the crank case to the oil pan and the crank shaft to the fly wheel said crank case may be bodily removed from the oil pan.

5. An internal combustion engine comprising'a plurality of cylinders, said cylinders being arranged in pairs and each cylinder being provided with an intake and an exhaust port, a manifold communicating with each of the intake ports, and a bolt engaging the manifold in alignment with the intake ports of each pair and positioned intermediate said intake ports to secure the manifold in place.

6. An internal combustion engine comprising a plurality of engine cylinders, said cylinders being arranged in pairs, each cylinder having intake and exhaust port openings comn'iunicating therewith, and a removably mounted manifold having a plurality of branches, each branch being provided with a pair of port openings adapted to register with said port openings connecting with said cylinders, said manifold being removably secured in position by clamping means exerting pressure between each pair of port connecting portions of the mai'lold, said securing means being arranged substantially in alignment with the port openings.

In testimony whereof, I hereunto afiix my signature.

FORREST F. CAMERON. 

